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Vibration while braking!... ???

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Old Dec 6, 2010 | 02:17 AM
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Question Vibration while braking!... ???

I've noticed for awhile now that when im slowing to a crawl or stop, I feel a vibration that is far from subtle! ... Brake rotors look fine. ... ??? ... A bit baffled. haha!
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Old Dec 6, 2010 | 03:25 AM
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Check for play in the wheel bearings
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Old Dec 6, 2010 | 03:54 AM
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I just need to jack up the car and try and wiggle the wheel back n' forth to see if there's any play right? ..
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Old Dec 6, 2010 | 07:25 AM
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It's likely warped rotors in my experience. You can't see lateral runout by just looking at them.
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Old Dec 6, 2010 | 08:18 AM
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Originally Posted by WS6 Rampage
I just need to jack up the car and try and wiggle the wheel back n' forth to see if there's any play right? ..
Yes. That is all. I don't believe these wheel bearings are servicable.
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Old Dec 6, 2010 | 02:56 PM
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Originally Posted by johnpate01
It's likely warped rotors in my experience. You can't see lateral runout by just looking at them.
You had that?... I considered it but wasn't sure.
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Old Dec 6, 2010 | 06:08 PM
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Originally Posted by johnpate01
It's likely warped rotors in my experience. You can't see lateral runout by just looking at them.
Agreed. Very possible this is the problem, some shops can put them on a lathe and check runout for you, or you could try swapping some fresh ones in and see if it goes away.
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Old Dec 6, 2010 | 11:28 PM
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K... So I had the font end lifted today since I was swapping out my fuel filter. Since she was up I tried wiggling the wheel. ... NADA! ... Didn't move for ****! ... So I'm gonna lean towarrds the rotor being warped. ... BTW, how does this happen?
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Old Dec 7, 2010 | 06:35 AM
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Rotor warp usually occurs when the rotor is heated more than it should be. This can occur if you really like to drag the brakes (i.e. brake long and easy when approaching a stop), if you race the car frequently, or just drive it on the street with less than top quality rotors and haven't changed them in a while. The threshold for rotor warping will increase as the quality of the material in the rotor increases - better rotors warp less often.
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Old Dec 7, 2010 | 12:29 PM
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Make sure your slider pins are sliding freely. If they don't
then the calipers can't follow minor warpage.
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Old Dec 8, 2010 | 08:48 PM
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Hi, i would pull the rotors and take them to your local parts store. They can check the run out and trueness for you. They usually will check for free if you are a regular customer. I have purchased and replaced rotors only to find the new rotors out of round. Good luck with your project and have a merry christmas. JiM
PS: MAKE SURE TIRES ARE TRUE/BALANCED ALSO TRANSMISSION MOUNT AND U-JOINTS.

Last edited by jim ravencraft; Dec 8, 2010 at 08:52 PM. Reason: ADDING INFO
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